<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    div:first-child {
      width: 200px;
      height: 200px;
      background-color: pink;
      /*float: left;left 是默认值，默认向左浮动*/
      float: right;/* rigth 向右浮动*/
    }
  </style>
</head>
<body>
 <div></div>
</body>
</html>
